Testing outfit and tool case



May 13 1924. 1,494,232

P. FRIEDLY TESTING OUTFIT AND TOOL CASE Filed Oc t. a. 1921 2 Sheets-Sheet 1 E3 1924?. ifiQZBZ P. FRHEDLY TESTING OUTFIT AND TOOL CASE Filed Oct. 8, L921 2 Sheets-Sheet 2 wrmass; ATTORNEY llli and

mice ole GONVQEK, ome.

Application flicai leiciiei- 12,

To ea whom 51$ may CO'RCQPIM Be 'ie imoweiihei; L PAUL Femnm, e'ciiizen oi" the Unified Stems, residing at Com .3703 in She cokiiicy of Van Wert emi State of hie, have invented new and useful ll rovements in Tcstin Gutfies and Too eses, of which the following is e specificaiion'. This invention releies to elecii'iceliesting devices end has for its objecfi the provision of o combineeion of elcc'ericel devices cemcicteol with e sllSOOl box oikit of 'ihe type commonly used on the running-boards of automobiles ami the like, the structure end errezogement of the ports being such es to facilitate testing of tho-continuity of an electric circuit through coeduciors, 'ihe device being designed peiiicuiei'ly fol? use in fleecing ermcmrc coils end the commuietor fill eeceioiie essocietecl ,eliei'ewiih.

An impoxieniio eject is the provision of e tes'iing'levice 'oii this clioreciex' which iiiciuclee e pecelioily coneteucied lie-mi ere gcgeol oembcc having two-contacts designed to eiigege edjecenls eeciio'iie-of e, commute tor, elie clevice iioeievoe, 110%; being limited; for use int/ceiling; cciiiiimtefcoi's as it maybe used in essocieiioii Willi e greet variety of electrical devices, like compilation eeeclii suggesting" iiselfeo ilie -mlllil oi one sliilie intheert.

An midiizioiiel object is ilie provision of e cievice of this, clieeociee which wiil l}-8 size pie and inexpeiieiv e iii meiiufecmie, eesy io use, @filfilfilllll in service, durable, end a genei'elimprovemeot in the em. lVii'ii ili e .e-bcve emi other objecis and; mi venccges n view, the invention consiscs the iieizeile of conetmclioii so be l ereinefier moi'e lolly described end; cleimecl and illusti'eleill the occompenj/ing drawings in Figure 1 is gierspectivo View of my testing oiliiit associated with e conceining tool box.

Figorei is o. diagrammatic View illus treiiog the use of my device in. tescii'ig ermctuie coils and cemmuteior sections.

Figure 3 is c View showing a, moc'lifierl arrangement.

Figm'e i is e iiiegiommeiic View showing e still; further modification.

,Figllie 5 is view of eiioilie time,

Referring more perciciileciy iko ilie iimwllilg' ll lieve sliowge my device cc commie modiiicw Z ng; 'plmeiicy' ofi ,eleccricel eeciiig inscruieejants, namely, a, suitable beiizei'y l0, evoli meter 11, on emmeter 12, c, uzzer I. head engaging teie hone receiver sci 14:, Q?" and eswitch 155, el theee insimiiieiiizs lie ing mounted upon e suitable lease 1(3 hingedly mounted iii; 16? within e conieiein; box 1? having the camel cover 1c. The boi; 17 is of the type constiuccion of stomped steel we used. ee ilie tool box of an auto.- mobilc, such boxes being; commonly secured upon the running -b0m,l or other eonvem ieni location. The various instruments 7 mentioned are of course proyicled with suii- T l able terminals whereby proger connections" may be made, as will be ereiooftcr described. It is of course apparent the I moire nee of suitable wiresl hevi ig'iermi- V male 28 adapted to be coimeoiccl with on" crmeiuie or commutator-lo he tee-cod, the

wires else being netm'elly connected with the lie-fiery. The space below the base 1c mm; lee used as e tool fiii'iliermore make use of e terminel de- (W vice comprising e, block of insulation 21 through which extencl meeeilicrods or wires- 22 which preferably have curved ends 22; epececl epez'i end which ere connected Wiili other wiresQei o'dopte for connection with E the volt meter, the buzzer, the emmeter, or the telephone receiver set, as may be preffiififiill. i V H in Figure e l liiiv'eeliown c diagram of the circuit evecn tiie'eppemtes is wronged; cc. for testing an armature emi commuietoi; in such oeejtlie termieeleQGoi the Wires 19 which lead from the bettery are en gagged egeinsi; diemetricelly .oppoei ze points of the commuteizoi A; The 4 are connected 'Wlllll tlie vcliz me 11 emi with the metallic elements 22 oi islie liemix device, In ceiryiiig out the testiiig pmcess, this hotel device is so ei'iengecl time-inc ends 230i clic meizellic elements 22 elieceoiwilll engage ageiiist ecijecencsectioiie B of the commutator." If the commutator sections are not shore circuited. end if the armature coiie G connecied therewith, have proper connections and heve no breaks, the read ng on the volt meter will be the same regardless oi which peir of sections are engegecll the metallic members 22. if there ellotil lJfi break inihe armature coil coniieciifig eclglecent commutator sections there willlie e eero receding on the volt meter. Ii two 01? the commuteici sections are eliorii'ciremiefi' or if 2, coii is rhort circuited or grounded, the volt meter will show practically no deflection. If: there is a, poor connection hetweene section and the coil connecting two adjacent sections,- there wil be a large drop in the voltage whereas an open circuit caused by a break'i'n the coil will be indicated by an absolute fell oi the voltage.

Instead using the volt meter, as disclosed in Fi ure 2 i make use of the buzzer 13 which must of course be interposed in the connection between one of the members 22 and the battery, this arrangement being shown in Figure 3.

In F'gure i I have shown my testing upparetus as utilizing the telephone receiver set M connected with the contact members 22 in place of the volt meter and having also shown the source of current being a power line, having an incandescent-lamp D or other suitable resistance interposed in'the circuit between this power line and the-contects 20.

If preferred, 1 may make use of the arrangement shown in Figure 5, which d1sciosesthe use of fhe amnieter 12 taking" the place of ihe'bnzzer shown in Figure 3.

In all forms (it the device wiil be seen that the operation is substantially the some,

the defects in the circuit being evidenced.

by either drop in voltage, sounding of the buzzer, clicking in the telephone receiver set, or variation in the readings of the emzneter. Regardless of which form of the apparatus is used it will be apparent that the arrangement of the parts is simple and that the changes from one form of testin instrument to another may be readily effected and that the test may hecerricd out by e comparatively unskilled workmen.

While I have shown and described the preferred embodiments of my invention it is of course to be understood that I reserve the right to make sucli'cliaiiges in the form construction and, arrangement of parts as will not depart froin'the spiritofthe invention or the scope of the subjoined claim.

What is claimeo is:-

In a testing apparatus, a contact device comprising an elongated supporting handle of insulating material, and a pair of metallic contact elements secured therein, extending therethrough and projecting beyond the ends thereoithe contact members projecting beyond one end being of unequal lengths whereby to be engageable upon adjacent sections of a commutator in testing.

e In testimony whereof I ofiix my signature.

PAUL "FRIEDLY. 

